[PATCH 5.10 114/406] Bluetooth: btusb: Do not call kfree_skb() under spin_lock_irqsave()

Greg Kroah-Hartman
2023-09-17T19:26:17Z

From: Jinjie Ruan <ruanjinjie@huawei.com>

[ Upstream commit 2a05334d7f91ff189692089c05fc48cc1d8204de ]

It is not allowed to call kfree_skb() from hardware interrupt
context or with hardware interrupts being disabled.
So replace kfree_skb() with dev_kfree_skb_irq() under
spin_lock_irqsave(). Compile tested only.

Fixes: baac6276c0a9 ("Bluetooth: btusb: handle mSBC audio over USB Endpoints")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/bluetooth/btusb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 49d5375b04f40..f99d190770204 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1689,7 +1689,7 @@ static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
* alternate setting.
*/
spin_lock_irqsave(&data->rxlock, flags);
- kfree_skb(data->sco_skb);
+ dev_kfree_skb_irq(data->sco_skb);
data->sco_skb = NULL;
spin_unlock_irqrestore(&data->rxlock, flags);

--
2.40.1